Back to EveryPatent.com
United States Patent | 6,047,020 |
Hottinen | April 4, 2000 |
A method and a receiver in a system in which received signals are composed of a number of summed signal components of which at least some are unknown, and in which the receiver has components for sampling the received signal to produce samples and forming an information vector of the samples, components for estimating the received signals with one or more multidimensional filters, components for forming a model of the received signal by a cost function which reveals non-linearities in the signal, and for optimizing the filter function, and components for detecting data contained in the samples of the received signal by means of the optimized filter functions so that prior to the detection the dimension of the information vector is reduced.
Inventors: | Hottinen; Ari (Vantaa, FI) |
Assignee: | Nokia Telecommunications OY (Espoo, FI) |
Appl. No.: | 952057 |
Filed: | November 7, 1997 |
PCT Filed: | March 18, 1997 |
PCT NO: | PCT/FI97/00176 |
371 Date: | November 7, 1997 |
102(e) Date: | November 7, 1997 |
PCT PUB.NO.: | WO97/35384 |
PCT PUB. Date: | September 25, 1997 |
Mar 19, 1996[FI] | 961271 |
Current U.S. Class: | 375/130; 370/342; 370/344; 370/347; 375/152; 375/349 |
Intern'l Class: | H04B 015/00 |
Field of Search: | 342/159 375/200,206,207,208,209,210,254,346,348,349,350 395/75 706/43,59 370/335,342,349,441,344 |
5625829 | Apr., 1997 | Hong | 395/75. |
5706013 | Jan., 1998 | Melvin et al. | 342/159. |
5715279 | Feb., 1998 | Laakso et al. | 375/224. |
5761237 | Jun., 1998 | Petersen et al. | 375/200. |
Foreign Patent Documents | |||
465 851 | Jan., 1992 | EP. | |
493 904 | Jul., 1992 | EP. | |
641 100 | Mar., 1995 | EP. | |
711 044 | May., 1996 | EP. | |
95 24086 | Feb., 1994 | WO. |
P. Huber, Projection Pursuit, Annals of Statistics, vol. 13, No. 2, pp. 435-475, 1985. J. Friedman, Exploratory projection pursuit, J. American Statistical Association, vol. 82, No. 397, pp. 249-266, Mar. 1987. Hottinen: "Self-Organizing Multiuser Detection", IEEE, 1994, pp. 152-156. Verdu:. "Adaptive Multisuer Detection", Department of Electrical Engineering, Princeton University, pp. 43-50. |